将“把”字句改为“被”字句。    
1．他们把桌椅搬到门前。  
                                                                                      
2．小孩子把一群鸭子赶到水中。 
                                                                                       
3．小明把几株芍药花种在门前。 
                                                                                        
4．碧绿的藤和叶把小院打扮得很漂亮。